Pistol grip oil can



Dec. 21, 1937. E. w. DAVIS 2,102,837

PISTOL GRIP OIL CAN Filed Dec. 2 1955 2 Sheets-Sheet 1 Dec. 21, 1937. E. w. DAVIS PISTOL GRIP OIL CAN Filed Dec. 2, 1935 2 Sheets-Sheet 2 Patented Dec. 21, 19 37 A UNITED STATES-PATENT OFFICE PISTOL GRIP CAN Ernest W. Davis, Oak Park, 111., assignor to Stewart-Warner Corporation, Chicago, 111., a corporation of Virginia 7 .Application December 2, 1935, Serial No. 52,456

' 8 Claims. (01. 22151) My invention relates generally to lubricating A cover plate 30 is secured to the pistol grip: apparatus, and more particularly to improvehandle by means of screws 32 threaded in bosses ments in pressure 011 cans. 34 formed in the handle 26, the plate 30 serving It is an object of my invention to provide an as a support for the cylinder 36 of a pump and improved form of pressure oil can in which a a discharge tube 38. Both the cylinder 36 and 5 pistol grip is employed as a handle and a trigger the tube 38 project through suitable holes formed projecting from the handle isutilized to eject in the plate 30 and are preferably secured in oil from the can under moderatepressure. place by soldering. The lower end of cylinder 36 A further object is to provide an improved is secured in a suitable bore 31 formed in a ll) pump mechanism in which the piston moves very valve block 40. The cylinder has a piston 42 freely, so that the pump may be operated easily freely reciprocable therein, the piston being seby means of a finger-pressed trigger. cured to a piston rod 44 and being normally A further object is to provide an improved oil urged upwardly by a compression coil spring 43, can in which substantially all of the oil in. the the upper end of which abuts a cup leather formlj5' reservoir may be dispensed. er 48 constituting part of. the piston 42 and the A further object is to provide an improved oil lower end of which abuts the end of the bore 3T can which is simple in construction, easy to formed in t e Va e'b The piston 42 operate, and which may be economically manuis composed of two opposed cup leathers 39 and factured, 4|, the'upper cup leather 39 being provided with Other objects will appear from the following a resilient spreader 43. For the purpose of re- 20 description, reference being had to the accomducing the friction between the piston and cylpanying drawings, in which: inder, the lower cup leather 4| is not provided Fig. 1 is an elevationalview, a portion of the with a spreader. The reduced friction makes reservoir being broken away to show the pump possible the use of a relatively weak spring '46,

5 and discharge tube in elevation; which makes the pump easier to Operate.

Fig. 2 is a fragmentary sectional view of the An inlet valve chamber 50 in the valve block base and reservoir of the. oil'can; 40 is in direct communication with the interior Fig. 3 is an enlarged horizontal sectional view of the cylinder 35 d s p v d W an inle taken on the line 3-3 ofiFig. 4; check valve 52 which is preferably operated by Figs. 4 and 4A together constitute a vertical ravity to ak it p ss l t us the at v ly 30 sectional view taken on a broken plane repre- Weak Piston returning Sp g A Set Screw 5 sented generally by the line 4-4 of Fig. 3;'and s provided w t a projection 56 to o d' h Fig. 5 is a transverse sectional view of the heck v lv 52 n a p i n adjacent its Seat: spout taken on the line 5--5 of Fig. 4-A. Thevalve block is provided with an outlet check- Referring to Figs. 1 and 4, the improved oil can valve 58 whi h a y. closes the n f n 35 of my invention comprises a generally hemiutlet passageway m ni in t the spherical reservoir shell Ill having av flanged botinlet C k Val Chamber 0- ValVe 5 5 tom 12 soldered or welded thereto. Abase l4 of resiliently he d a a st its Seat by a light comrelatively heavy gauge metal has a peripheral preSSiOn Spring 52 Carried ye Sp retainer flange it which is spun inwardly against and plug 64. The lower end of the discharge 40 the shell ll) of the reservoir, the base and its tube 38 is fitted and soldered i a bore. 65 formed flange serving to protect the bottom [2 and its in the Valve d 49 and Communifiates with h joint with the shell In of the reservoir from inl t he k valve chamber. jury. The shell I!) of the reservoir has a thread-- The p stonirod 44 is p t y a s of a ed bushing l8 pressed 'in a flanged aperture at trigger 68 p v d n a pin 0 which s p ss d 45 the top thereof,'to form a. filling opening. This into the Pistol rip handle 26, the tri being opening is normally closed by a threaded plug formed integrally with an arm 14 connected to 20, a suitable gasket 22 being provided to preth p st d 44 y a piv t p 6- vent leakage of oil. An annulus 24 is secured in T pr vide f r l r n e we n h pi n the opening formed at. the top of the reservoir od 44 a discharge tube andb aus 0f he 50 shell I0, the annulus being internally threaded fact that the latter is preferably located near the to receive a pistol grip handle 26 which may be Cen O t e mounting plate the axi f the a hollow die casting. A gasket 28 is interposed y d 35 i located to the Side Of the f between the pistol grip handle 23 and the annutube '38 (with respect to a ral ve ti plane lus 24. Y passing through the center of the handle c sting 55 26). To prevent formation of a partial vacuum within the reservoir I8 a small air vent hole I8 is provided in the plate 32 and a suitable gasket 88 is provided to prevent leakage of oil between the plate 30 and the handle casting 26. The discharge tube 38 is supported and strengthened by an upwardly extending hollow tubular portion 82 of the handle casting 26.

A spout 84, having a nozzle 86 threaded at its upper extremity, is secured to the tube 38 by a clamping sleeve nut 88 which is threaded over the upper end of the tube. The threaded por tion at the upper end of the tube 38 has a pair of longitudinal slots 90 cut therein to receive the projecting ends of a pin 92 which is secured in the spout 84. The lower end of the spout 84has a nipple 94 pressed therein, the nipple forming a support for a suitable sleeve-shaped gasket 9'6. When the spout 84 has been properly positioned with respect to the tube 38 the threaded sleeve nut 88, which has a slightly tapered internal thread, is screwed into the position in which it is shown in Fig. l-A, thus pressing the slotted end portion of the tube 38 into tight frictional clamping engagement with the lower end of the spout 84. The spout 84 may thus be easily assembled to the discharge tube 86, and will be securely held in assembled position without danger of leakage of lubricant. The assembly of the discharge tube 38 in the handle casting 26 is also facilitated by providing this separable connection between this tube and the spout 84.

The clamping sleeve nut 88 has a shallow peripheral groove 98 to receive a swivel ring I80. A split key ring I82 links an eye 184 formed as part of the ring I00 with a D-ring E88 attached to the end of a strap 188, the other end of the strap being connected by means of a harness snap H0 and key ring H2 with an ear H4 formed on the upwardly projecting portion 82 of the handle casting.

When the oil can is being used the pistol grip forms a very convenient handle and in normal use the reservoir will be tilted slightly from the vertical so that the inlet opening of the pump will be in position to receive oil until all but a very small quantity has been dispensed from the reservoir. The trigger operator for the pump is located conveniently and enables the user accurately to gauge the amount of oil dispensed. The pump cylinder 36 and the valve block 40 are so positioned that they balance the handle casting with the result that, in normal use, the center of gravity of the oil can will lie beneath the upper end of the pistol grip portion of the handle. Due to this fact the oil can may be carried and used with ease.

The spout and discharge tube of the oil can are sufficiently long that oil may readily be forced into the relatively inaccessibly located oil cups and bearings. The spout and discharge tube are made separable to facilitate assembly of the device, while the sleeve nut 98 utilized to clamp these parts together forms a convenient anchorage for the carrying strap H38.

Due to the force feed construction of the oil can, the nozzle may be placed above or below the level of the reservoir without undesired flow of oil therefrom. By unscrewing the handle 26 from the reservoir ID the valves of the pump are readily accessible for cleaning. There are relatively few moving parts in the pump mechanism so that it may be easily operated and the probability of the pump getting out of order is remote.

While I have illustrated and described a preferred embodiment of my invention, many modifications may be made without departing from the spirit of the invention and I do not wish to be limited to the precise details set forth but desire to avail myself of the changes within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In an oil can, the combination of a reservoir, a handle secured to said reservoir, a discharge tube secured to said handle and projecting outwardly therefrom, the outer end of said tube being threaded and having longitudinal slots therein, a spout having one end telescoping within the outer end of said tube, and a clamping sleevescrewed over the end of said tube and constructed and arranged to contract the slotted end portion of said tube into clamping engagement with said spout.

2. In an oil can, the combination of a reservoir, a handle secured to said reservoir, a discharge tube secured to said handle and projecting therefrom, the outer end of said tube having longitudinal slots formed therein, a spout having one end thereof projecting into the end of said tube, means on said spout cooperating with said slots to prevent relative rotation of said spout and said tube, and a clamping member for forcing the slotted end of said tube into frictional clamping engagement with said spout.

3. An oil can comprising a reservoir, a handle secured to said reservoir, arelatively long discharge tube leading from said reservoir and extending through said handle, a spout, fastening means for securing said spout rigidly to said tube, and a flexible carrying member having one end swiveled to said fastening means and its other end secured to said handle.

4.. In an oil can the combination of a reservoir, a handle casting secured to said reservoir and having a generally tubular upwardly projecting portion, a discharge tube extending from said reservoir through said projecting portion of said handle casting and supported thereby, a spout, and means for detachably securing saidspout to the outer end of said discharge tube.

5. In an oil can the combination of a reservoir, handle casting secured to said reservoir and having a generally tubular upwardly projecting portion, a discharge tube extending from said reservoir through said projecting portion of said handle casting and supported thereby, a spout, a peripherally grooved sleeve for securing said spout to the outer end of said discharge tube, a swivel ring mounted in the groove of said sleeve, and a carrying strap having one end secured to said swivel ring and its other end secured to said handle casting.

6. In an oil can the combination of a reservoir having a filling opening and a threaded opening in the top thereof, a hollow pistol grip handle casting having a part screwed into said threaded opening, a closure plate secured over said part of said handle casting, a pump cylinder and a discharge tube each extending through said plate, a piston reciprocable in said cylinder, and a piston rod secured to said piston and manually reciprocable within said hollow handle casting.

' 7. In a pressure oil can, the combination of a reservoir having a filling opening, a pistol grip handle detachably secured to said reservoir, an open-end pump cylinder secured to said handle and normally projecting into said reservoir at an angle to the axis thereof, a piston reciprooable in said cylinder, a piston rod secured to said piston and projecting through the open end of said cylinder, a discharge tube secured to said pumping mechanism and carriedby said handle, a pump operating element pivotally mounted on said handle in the position of a trigger with respect to the pistol grip of said handle, and a. pivotal connection between said element and the free end of said piston rod.

8. In a pressure oiler, the combination of a cir-' cuiar reservoir; a handle secured to said reservoirvand having a pistol grip portion positioned at one side of the axis of said reservoir; a. pump carried by said handle extending into said reservoir at an angle with respect to the axis of the latter and in substantially the same plane as said handle, a portion of said pump positioned upon the side of the reservoir axis opposite said handle; an operating mechanism for said pump including a trigger associated with said pistol grip handle, and a pump rod extending angularly with respect to the reservoir axis connected to the trigger on one side of the axis and to the pump portion on the opposite side; a discharge tube connected to receive lubricant from said pump and extending outwardly and upwardly from said the pistol grip handle is secured.

ERNEST W. DAVIS. 

